REA's Essentials provide quick and easy access to critical information in a variety of different fields, ranging from the most basic to the most advanced. As its name implies, these concise, comprehensive study guides summarize the essentials of the field covered. Essentials are helpful when preparing for exams, doing homework and will remain a lasting reference source for students, teachers, and professionals. Anthropology discusses human evolution and development, human adaptation to the environment, culture, society, the individual, social organization, social stratification and transaction, symbolic expressions, and anthropology and the future.